Add missing prerequisite for some Linux distros (rust-lang#1481)

Author: scarvalhojr

src/building/prerequisites.md

@@ -9,6 +9,7 @@ Before building the compiler, you need the following things installed:
 * `git`
 * `ssl` which comes in `libssl-dev` or `openssl-devel`
 * `pkg-config` if you are compiling on Linux and targeting Linux
+* `libstdc++-static` may be required on some Linux distributions such as Fedora and Ubuntu
 
 If building LLVM from source (the default), you'll need additional tools: